A satellite monitoring system is disclosed. The system may monitor various downlink signals of various satellites. In response to user queries, the system may provide diagnostic and other data related to the characteristics of the downlink signals. In this manner, an independent verification and validation of downlink signal characteristics may be performed. Moreover, the system may take various actions in response to detected anomalies related to the characteristics of the downlink signals, such as automatically generating alerts for users and/or activating an uplink facility, such as a backup uplink facility and/or providing control signals to user devices, such as antenna controllers, to reorient user antennas in response to the characteristics of the downlink signals.